README.md

@@ -1,7 +1,5 @@
 # convert-source-map [![build status](https://secure.travis-ci.org/thlorenz/convert-source-map.svg?branch=master)](http://travis-ci.org/thlorenz/convert-source-map)
 
-<a href="https://www.patreon.com/bePatron?u=8663953"><img alt="become a patron" src="https://c5.patreon.com/external/logo/become_a_patron_button.png" height="35px"></a>
-
 Converts a source-map from/to  different formats and allows adding/changing properties.
 
 ```js
@@ -120,6 +118,3 @@ Returns a comment that links to an external source map via `file`.
 By default, the comment is formatted like: `//# sourceMappingURL=...`, which you would normally see in a JS source file.
 
 When `options.multiline == true`, the comment is formatted like: `/*# sourceMappingURL=... */`, which you would find in a CSS source file.
-
-
-[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/thlorenz/convert-source-map/trend.png)](https://bitdeli.com/free "Bitdeli Badge")

index.js

@@ -18,7 +18,7 @@ Object.defineProperty(exports, 'mapFileCommentRegex', {
 
 
 function decodeBase64(base64) {
-  return SafeBuffer.Buffer.from(base64, 'base64').toString();
+  return (SafeBuffer.Buffer.from(base64, 'base64') || "").toString();
 }
 
 function stripComment(sm) {
@@ -58,7 +58,7 @@ Converter.prototype.toJSON = function (space) {
 
 Converter.prototype.toBase64 = function () {
   var json = this.toJSON();
-  return SafeBuffer.Buffer.from(json, 'utf8').toString('base64');
+  return (SafeBuffer.Buffer.from(json, 'utf8') || "").toString('base64');
 };
 
 Converter.prototype.toComment = function (options) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "convert-source-map",
-  "version": "1.7.0",
+  "version": "1.8.0",
   "description": "Converts a source-map from/to  different formats and allows adding/changing properties.",
   "main": "index.js",
   "scripts": {